Download or read book Thermal Neutron Capture Cross Sections of Natural Li and the Separated Isotope Li6 written by Norman Earl Banks and published by . This book was released on 1962 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Thermal Neutron Absorption Cross Sections for Separated Isotopes written by H. S. Pomerance and published by . This book was released on 1948 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Thermal Neutron Capture Cross Sections of Isotopes written by H. Pomerance and published by . This book was released on 1952 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Thermal Neutron Activation Cross Sections written by L. Seren and published by . This book was released on 1944 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Thermal Neutron Capture Cross Sections of 234U and 236U written by M.J. Cabell and published by . This book was released on 1971 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Thermal Neutron Capture Cross Sections of 68Ge and 148Gd written by Maribel Gómez Rios and published by . This book was released on 1999 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Thermal Neutron Capture Cross section for 111Cd written by Eh. V. Vasil'eva and published by . This book was released on 1996 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Preliminary Evaluation of Neutron Capture Cross Sections for 144Sm 145Sm and 145Pm written by and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We have made preliminary neutron-capture cross-section calculations of the Hauser-Feshbach type for the isotopes 144Sm, 145Sm, and 145Pm to investigate the production of radioactive 145Pm by neutron capture on the stable isotope 144Sm. The calculations were made for incident neutron energies from 2.5 MeV to about 1−4 or 10−5 MeV, wherever the first unbound resonance was estimated to occur in each case. At that energy, the calculated value was reduced by a somewhat arbitrary factor, and the excitation function extended down to thermal energy using a (E/sub n/)−12 energy dependence. Since very large uncertainties are associated with the position and magnitude of the first unbound resonance and the subsequent extrapolation back to thermal energy, the cross sections in this low-energy region should not be considered more accurate than +- a factor of 10. For incident neutron energies above each step, the calculations represent an average through the separated and overlapping resonance regions and may be accurate to better than +- a factor of 2. 18 refs., 7 figs., 5 tabs.

Download or read book Neutron Capture Cross Sections of 178 179 18 Hf and the Origin of Nature s Rarest Stable Isotope 18 Ta written by and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The neutron capture cross sections of 178, 179, 18°Hf were measured in the energy range 2.6 keV to 2 MeV. The average capture cross sections were derived and fitted in terms of strength functions. Resonance parameters for the observed resonances below 10 keV were determined by shape analysis. Maxwellian-averaged capture cross sections were computed for thermal energies with kT between 5 and 100 keV. The cross sections for kT = 30 keV were used to determine the population probability of the 8- isomeric level in 18°Hf by neutron capture as (1.24 +- 0.06)% and the r-process abundance of 18°Hf as 0.0290 (Si = 106). These quantities served to analyze s- and r-process nucleosynthesis of 18°Ta, nature's rarest stable isotope.

Download or read book Thermal Neutron Capture Cross Sections of The Palladium Isotopes written by D. P. McNabb and published by . This book was released on 2005 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have measured precise thermal neutron capture {gamma}-ray cross sections {sigma}{sub {gamma}} for all stable Palladium isotopes with the guided thermal neutron beam from the Budapest Reactor. The data were compared with other data from the literature and have been evaluated into the Evaluated Gamma-ray Activation File (EGAF)[1]. Total radiative neutron capture cross-sections {sigma}{sub 0} can be deduced from the sum of transition cross sections feeding the ground state of each isotope if the decay scheme is complete. The Palladium isotope decay schemes are incomplete, although transitions deexciting low-lying levels are known for each isotope. We have performed Monte Carlo simulations of the Palladium thermal neutron capture de-excitation schemes using the computer code DICEBOX [2]. This program generates a level scheme where levels below a critical energy E{sub crit} are taken from experiment, and those above E{sub crit} are calculated by a random discretization of an a priori known level density formula {rho}(E, J{sup {pi}}). Level de-excitation branching intensities are taken from experiment for levels below E{sub crit} and the capture state, or calculated for levels above E{sub crit} assuming an a priori photon strength function and applying allowed selection rules and a Porter-Thomas distribution of widths. The calculated feeding to levels below E{sub crit} can then be normalized to the measured cross section deexciting those levels to determine the total radiative neutron cross-section {sigma}{sub 0}. In this paper we have measured {sigma}{sub 0}[{sup 102}Pd(n, {gamma})] = 0.9 {+-} 0.3 b, {sigma}{sub 0}[{sup 104}Pd(n, {gamma})] = 0.61 {+-} 0.11 b, {sigma}{sub 0}[{sup 105}Pd(n, {gamma})] = 21.1 {+-} 1.5 b, {sigma}{sub 0}[{sup 106}Pd(n, {gamma})] = 0.36 {+-} 0.05 b, {sigma}{sub 0}[{sup 108}Pd(n, {gamma})(0)] = 7.6 {+-} 0.6 b, {sigma}{sub 0}[{sup 108}Pd(n, {gamma})(189)] = 0.185 {+-} 0.011 b, and {sigma}{sub 0}[{sup 110}Pd(n, {gamma})] = 0.10 {+-} 0.03 b. We have also determined from our statistical calculations that the neutron capture state in {sup 107}Pd is best described as 2{sup +}(60%)+3{sup +}(40%). Agreement with literature values was excellent in most cases. We found significant discrepancies between our results for {sup 102}Pd and {sup 110}Pd and earlier values that could be resolved by re-evaluation of the earlier results.

Download or read book Thermal Neutron Capture Cross Sections Resonance Integrals and G factors written by S. F. Mughabghab and published by . This book was released on 2003 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Review of thermal neutron cross sections and isotopic compositions of the elements written by N. E. Holden and published by . This book was released on 1989 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Thermal Neutron Capture Cross Section and the Resonance Capture Integral of U236 written by M. J. Cabell and published by . This book was released on 1958 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1974 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Molten Salt Reactors and Thorium Energy written by Thomas James Dolan and published by Woodhead Publishing. This book was released on 2017-06-08 with total page 841 pages. Available in PDF, EPUB and Kindle. Book excerpt: Molten Salt Reactors is a comprehensive reference on the status of molten salt reactor (MSR) research and thorium fuel utilization. There is growing awareness that nuclear energy is needed to complement intermittent energy sources and to avoid pollution from fossil fuels. Light water reactors are complex, expensive, and vulnerable to core melt, steam explosions, and hydrogen explosions, so better technology is needed. MSRs could operate safely at nearly atmospheric pressure and high temperature, yielding efficient electrical power generation, desalination, actinide incineration, hydrogen production, and other industrial heat applications. Coverage includes: Motivation -- why are we interested? Technical issues – reactor physics, thermal hydraulics, materials, environment, ... Generic designs -- thermal, fast, solid fuel, liquid fuel, ... Specific designs – aimed at electrical power, actinide incineration, thorium utilization, ... Worldwide activities in 23 countries Conclusions This book is a collaboration of 58 authors from 23 countries, written in cooperation with the International Thorium Molten Salt Forum. It can serve as a reference for engineers and scientists, and it can be used as a textbook for graduate students and advanced undergrads. Molten Salt Reactors is the only complete review of the technology currently available, making this an essential text for anyone reviewing the use of MSRs and thorium fuel, including students, nuclear researchers, industrial engineers, and policy makers. Written in cooperation with the International Thorium Molten-Salt Forum Covers MSR-specific issues, various reactor designs, and discusses issues such as the environmental impact, non-proliferation, and licensing Includes case studies and examples from experts across the globe

Download or read book Neutron Capture Cross Section Standards for BNL 325 Fourth Edition written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This report evaluates the experimental data and recommends values for the thermal neutron cross sections and resonance integrals for the neutron capture reactions: 55Mn(n, .gamma.), 59Co(n, .gamma.) and 197Au(n, .gamma.). The failure of lithium and boron as standards due to the natural variation of the absorption cross sections of these elements is discussed. The Westcott convention, which describes the neutron spectrum as a thermal Maxwellian distribution with an epithermal component, is also discussed.

Download or read book Public Works for Water Pollution Control and Power Development and Atomic Energy Commission Appropriation Bill 1971 Atomic Energy Commission Tennessee Valley Authority written by United States. Congress. House. Committee on Appropriations. Subcommittee on Public Works and published by . This book was released on 1970 with total page 1224 pages. Available in PDF, EPUB and Kindle. Book excerpt: